LTC1261CS8-4.5(RevA) Ver la hoja de datos (PDF) - Linear Technology
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LTC1261CS8-4.5 Datasheet PDF : 16 Pages
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LTC1261
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage (Note 2)............................................ 9V
Output Voltage (Note 5) .............................. 0.3V to – 9V
Total Voltage, VCC to VOUT (Note 2) ........................ 12V
Input Voltage
SHDN Pin ................................. – 0.3V to VCC + 0.3V
REG Pin ............................................... – 0.3V to 12V
ADJ, RO, R1, RADJ ............... VOUT – 0.3V to VCC + 0.3V
Output Short-Circuit Duration ......................... Indefinite
Operating Temperature Range
Commercial ............................................ 0°C to 70°C
Extended Commercial (Note 7) .......... – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
VCC 1
C1+ 2
C1– 3
GND 4
8 SHDN
7 REG
6 OUT
5 ADJ (COMP*)
S8 PACKAGE
8-LEAD PLASTIC SO
*FOR FIXED VERSIONS
TJMAX = 150°C, θJA = 150°C/W
ORDER PART
NUMBER
LTC1261CS8
LTC1261CS8-4
LTC1261CS8-4.5
S8 PART MARKING
1261
12614
126145
TOP VIEW
NC 1
C1+ 2
C1– 3
C2+ 4
C2– 5
GND 6
R0 7
14 VCC
13 SHDN
12 REG
11 OUT
10 ADJ
9 RADJ
8 R1
ORDER PART
NUMBER
LTC1261CS
S PACKAGE
14-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 110°C/W
Consult factory for Industrial or Military grade parts.
ELECTRICAL CHARACTERISTICS VCC = 3V to 6.5V, TA = 25°C unless otherwise specified.
SYMBOL
VREF
IS
fOSC
PEFF
VOL
IREG
IADJ
VIH
VIL
IIN
tON
PARAMETER
Reference Voltage
Supply Current
Internal Oscillator Frequency
Power Efficiency
REG Output Low Voltage
REG Sink Current
Adjust Pin Current
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
Turn-On Time
CONDITIONS
No Load, SHDN Floating, Doubler Mode
No Load, SHDN Floating, Tripler Mode
No Load, VSHDN = VCC
IREG = 1mA
VREG = 0.8V, VCC = 3.3V
VREG = 0.8V, VCC = 5.0V
VADJ = 1.24V
VSHDN = VCC
IOUT = 15mA
0°C ≤ TA ≤ 70°C
MIN TYP MAX
– 40°C ≤ TA ≤ 85°C
(Note 7)
MIN TYP MAX UNITS
q 1.20 1.24 1.28 1.20 1.24 1.28
V
q
600 1000
600 1500
µA
q
900 1500
900 2000
µA
q
5
20
5
20
µA
550
550
kHz
65
65
%
q
0.1 0.8
0.1 0.8
V
q5
8
5
8
mA
q8
15
8
15
mA
q
0.01 1
0.01 1
µA
q2
2
V
q
0.8
0.8
V
q
5
20
5
25
µA
500
500
µs
2
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